package com.hosever.utils;

import java.util.regex.Pattern;

public class SeverHtmlUtils {
	
	/**
	 * html转text
	 * @param inputString
	 * @author YangJunping
	 * @date 2010-7-15
	 * @return
	 */
	public static String html2Text(String inputString) {    
        String htmlStr = inputString; // 含html标签的字符串    
        String textStr = "";    
        java.util.regex.Pattern p_script;    
        java.util.regex.Matcher m_script;    
        java.util.regex.Pattern p_style;    
        java.util.regex.Matcher m_style;    
        java.util.regex.Pattern p_html;    
        java.util.regex.Matcher m_html;    
  
        java.util.regex.Pattern p_html1;    
        java.util.regex.Matcher m_html1;    
  
       try {    
            String regEx_script = "<[//s]*?script[^>]*?>[//s//S]*?<[//s]*?///[//s]*?script[//s]*?>"; // 定义script的正则表达式{或<script[^>]*?>[//s//S]*?<///script>    
            String regEx_style = "<[//s]*?style[^>]*?>[//s//S]*?<[//s]*?///[//s]*?style[//s]*?>"; // 定义style的正则表达式{或<style[^>]*?>[//s//S]*?<///style>    
            String regEx_html = "<[^>]+>"; // 定义HTML标签的正则表达式    
            String regEx_html1 = "<[^>]+";    
            String regEx_space = "&nbsp;";
            
            p_script = Pattern.compile(regEx_script, Pattern.CASE_INSENSITIVE);    
            m_script = p_script.matcher(htmlStr);    
            htmlStr = m_script.replaceAll(""); // 过滤script标签    
  
            p_style = Pattern.compile(regEx_style, Pattern.CASE_INSENSITIVE);    
            m_style = p_style.matcher(htmlStr);    
            htmlStr = m_style.replaceAll(""); // 过滤style标签    
  
            p_html = Pattern.compile(regEx_html, Pattern.CASE_INSENSITIVE);    
            m_html = p_html.matcher(htmlStr);    
            htmlStr = m_html.replaceAll(""); // 过滤html标签    
  
            p_html1 = Pattern.compile(regEx_html1, Pattern.CASE_INSENSITIVE);    
            m_html1 = p_html1.matcher(htmlStr);    
            htmlStr = m_html1.replaceAll(""); // 过滤html标签    
  
            p_html1 = Pattern.compile(regEx_space, Pattern.CASE_INSENSITIVE);    
            m_html1 = p_html1.matcher(htmlStr);    
            htmlStr = m_html1.replaceAll(""); // 过滤空格&nbsp;    
            
            textStr = htmlStr;    
  
        } catch (Exception e) {    
            System.err.println("Html2Text: " + e.getMessage());    
        }    
  
       return textStr;// 返回文本字符串    
    } 
	
	/**
	 * 特殊字符过滤器
	 * @param message
	 * @return
	 */
	public static String htmlSpecialCharFilter(String message) {  		  
        if (message == null)  
            return (null);  
  
        char content[] = new char[message.length()];  
        message.getChars(0, message.length(), content, 0);  
        StringBuilder result = new StringBuilder(content.length + 50);  
        for (int i = 0; i < content.length; i++) {  
            switch (content[i]) {  
            case '<':  
                result.append("&lt;");  
                break;  
            case '>':  
                result.append("&gt;");  
                break;  
//            case '&':  
//                result.append("&amp;");  
//                break;  
            case '"':  
                result.append("&quot;");  
                break;  
            default:  
                result.append(content[i]);  
            }  
        }  
        return (result.toString());  
	}
	
	/**
	 * 特殊字符过滤恢复
	 * @param message
	 * @return
	 */
	public static String htmlSpecialCharResume(String message) {  		  
        if (message == null)  
            return (null);  
  
        message = message.replace("&lt;", "<");
        message = message.replace("&gt;", ">");
//      message = message.replace("&amp;", "&");
        message = message.replace("&quot;", "\"");
        
        return (message);  
	}
}
